Six cases of acute focal becterial nephritis

Abstract

  Acute focal bacterial nephritis (AFBN) refers to renal inflammatory disease without liquefaction. We report six cases of AFBN in which hyperleukocytosis and an elevated level of C-reactive protein were evident. However only three of the patients demonstrated abnormal findings upon initial urinalysis. Ultrasonography was useful for diagnosis of AFBN. The main findings were a focal hyperechoic area and a hypovascular area upon color doppler ultrasonography. The focal area showed low density with enhanced CT. Both enhanced CT and ultrasonography are indispensable for diagnosis of AFBN. We recommend that ultrasonography be performed for patients with fever of unknown origin.